You may have to open up some floor, because the openings are fairly close to the floor, (5 1/4) from the floor to the center of the drain). A floor mount back outlet is the least expensive, but a true wall hung may be better if you can get someone to sell you one. The are listed as commercial use only but maybe a supply house will not question your usage,or you can lie. These require an expensive carrier but can be mounted higher off the floor and may not require excavation.: I am looking for a toilet that will wall mount and has the waste discharge at the rear. I want to use it in a basement and dont want to tear out the floor, but have access to the main sewer line coming from the first floor right next to the outside wall of the bathroom. Any suggestions?